Power supply socket



FIG. 1 is a front view of a power supply socket showing a first embodiment of my new design;

FIG. 2 is a front top right perspective side view thereof;

FIG. 3 is a front view of a power supply socket showing a second embodiment of my new design; and,

FIG. 4 is a front top right perspective side view thereof.

The portions depicted in broken lines are environment and form no part of the claimed design. The portions of the power supply socket not shown in the drawings are not visible during use and form no part of the claimed design. 

CLAIM The ornamental design for a power supply socket, as shown and described. 